USB 3.0 + USB 2.0 Combo 7 port hub. It allows you to charge smart phones or tablets. With Different power supply capacity (2.5A, 3A or 4A), the charging configuration is different. At least you have 1 port 2.1A charging for tablet and maximum 7 ports charging for smart phones (each 500ma).
l 4 port USB 3.0 + 3 port USB 2.0 Combo USB Charging Hub.
l High Speed transmission.
l USB 3.0 and USB2.0 and USB1.1/1.0 compliant
l Charging maximum 7 smart phones (each 500mA).
l One unique port for charging Tablet 2.1A
l Plug and play
l External power adapter (2.5A, 3A or 4A optional)